VirtualBox 2.2.2 was running fine until, I got the latest upgrades from Ubuntu and now when I try to run Vista via VirtualBox. VirtualBox refuse to run. VirtualBox told me to execute the /etc/init.d/vboxdrv setup. I executed the command, and it failed. I looked inside the VirtualBox log files and found this: Makefile:140: *** Error: unable to find the sources of your current Linux kernel. Specify KERN_DIR=<directory> and run Make again. Stop. What I understand from the error is that Virtual Box could not find the current Linux kernel. That is what I understand. How do I fix this problem?